[LV] Remove EVLIndVarSimplify pass#160454
Merged
Merged
Conversation
Initially this was needed to replace the fixed-step canonical IV with the variable-step EVL IV, but this was eventually superseded by the loop vectorizer doing this transform itself in llvm#147222. The pass was then removed from the RISC-V pipeline in llvm#151483 and the loop vectorizer stopped emitting the metadata used by the pass in llvm#155760, so now there's no users of it.
Member
|
@llvm/pr-subscribers-vectorizers @llvm/pr-subscribers-llvm-transforms Author: Luke Lau (lukel97) ChangesInitially this was needed to replace the fixed-step canonical IV with the variable-step EVL IV, but this was eventually superseded by the loop vectorizer doing this transform itself in #147222. The pass was then removed from the RISC-V pipeline in #151483 and the loop vectorizer stopped emitting the metadata used by the pass in #155760, so now there's no users of it. Patch is 33.57 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/160454.diff 6 Files Affected:
diff --git a/llvm/include/llvm/Transforms/Vectorize/EVLIndVarSimplify.h b/llvm/include/llvm/Transforms/Vectorize/EVLIndVarSimplify.h
deleted file mode 100644
index 3178dc762a195..0000000000000
--- a/llvm/include/llvm/Transforms/Vectorize/EVLIndVarSimplify.h
+++ /dev/null
@@ -1,31 +0,0 @@
-//===------ EVLIndVarSimplify.h - Optimize vectorized loops w/ EVL IV------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass optimizes a vectorized loop with canonical IV to using EVL-based
-// IV if it was tail-folded by predicated EVL.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_TRANSFORMS_VECTORIZE_EVLINDVARSIMPLIFY_H
-#define LLVM_TRANSFORMS_VECTORIZE_EVLINDVARSIMPLIFY_H
-
-#include "llvm/Analysis/LoopAnalysisManager.h"
-#include "llvm/IR/PassManager.h"
-
-namespace llvm {
-class Loop;
-class LPMUpdater;
-
-/// Turn vectorized loops with canonical induction variables into loops that
-/// only use a single EVL-based induction variable.
-struct EVLIndVarSimplifyPass : public PassInfoMixin<EVLIndVarSimplifyPass> {
- PreservedAnalyses run(Loop &L, LoopAnalysisManager &LAM,
- LoopStandardAnalysisResults &AR, LPMUpdater &U);
-};
-} // namespace llvm
-#endif
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index e4dab4acc0b4a..f84a16bd97224 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -375,7 +375,6 @@
#include "llvm/Transforms/Utils/SymbolRewriter.h"
#include "llvm/Transforms/Utils/UnifyFunctionExitNodes.h"
#include "llvm/Transforms/Utils/UnifyLoopExits.h"
-#include "llvm/Transforms/Vectorize/EVLIndVarSimplify.h"
#include "llvm/Transforms/Vectorize/LoadStoreVectorizer.h"
#include "llvm/Transforms/Vectorize/LoopIdiomVectorize.h"
#include "llvm/Transforms/Vectorize/LoopVectorize.h"
diff --git a/llvm/lib/Passes/PassRegistry.def b/llvm/lib/Passes/PassRegistry.def
index 49d5d08474f0f..f0e7d36f78aab 100644
--- a/llvm/lib/Passes/PassRegistry.def
+++ b/llvm/lib/Passes/PassRegistry.def
@@ -755,7 +755,6 @@ LOOP_ANALYSIS("should-run-extra-simple-loop-unswitch",
#endif
LOOP_PASS("canon-freeze", CanonicalizeFreezeInLoopsPass())
LOOP_PASS("dot-ddg", DDGDotPrinterPass())
-LOOP_PASS("evl-iv-simplify", EVLIndVarSimplifyPass())
LOOP_PASS("guard-widening", GuardWideningPass())
LOOP_PASS("extra-simple-loop-unswitch-passes",
ExtraLoopPassManager<ShouldRunExtraSimpleLoopUnswitch>())
diff --git a/llvm/lib/Transforms/Vectorize/CMakeLists.txt b/llvm/lib/Transforms/Vectorize/CMakeLists.txt
index 96670fe3ea195..9f4a242214471 100644
--- a/llvm/lib/Transforms/Vectorize/CMakeLists.txt
+++ b/llvm/lib/Transforms/Vectorize/CMakeLists.txt
@@ -1,5 +1,4 @@
add_llvm_component_library(LLVMVectorize
- EVLIndVarSimplify.cpp
LoadStoreVectorizer.cpp
LoopIdiomVectorize.cpp
LoopVectorizationLegality.cpp
diff --git a/llvm/lib/Transforms/Vectorize/EVLIndVarSimplify.cpp b/llvm/lib/Transforms/Vectorize/EVLIndVarSimplify.cpp
deleted file mode 100644
index 5dd689799b828..0000000000000
--- a/llvm/lib/Transforms/Vectorize/EVLIndVarSimplify.cpp
+++ /dev/null
@@ -1,300 +0,0 @@
-//===---- EVLIndVarSimplify.cpp - Optimize vectorized loops w/ EVL IV------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass optimizes a vectorized loop with canonical IV to using EVL-based
-// IV if it was tail-folded by predicated EVL.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Vectorize/EVLIndVarSimplify.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Analysis/IVDescriptors.h"
-#include "llvm/Analysis/LoopInfo.h"
-#include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/OptimizationRemarkEmitter.h"
-#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/Analysis/ScalarEvolutionExpressions.h"
-#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/PatternMatch.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
-#include "llvm/Transforms/Utils/Local.h"
-
-#define DEBUG_TYPE "evl-iv-simplify"
-
-using namespace llvm;
-
-STATISTIC(NumEliminatedCanonicalIV, "Number of canonical IVs we eliminated");
-
-static cl::opt<bool> EnableEVLIndVarSimplify(
- "enable-evl-indvar-simplify",
- cl::desc("Enable EVL-based induction variable simplify Pass"), cl::Hidden,
- cl::init(true));
-
-namespace {
-struct EVLIndVarSimplifyImpl {
- ScalarEvolution &SE;
- OptimizationRemarkEmitter *ORE = nullptr;
-
- EVLIndVarSimplifyImpl(LoopStandardAnalysisResults &LAR,
- OptimizationRemarkEmitter *ORE)
- : SE(LAR.SE), ORE(ORE) {}
-
- /// Returns true if modify the loop.
- bool run(Loop &L);
-};
-} // anonymous namespace
-
-/// Returns the constant part of vectorization factor from the induction
-/// variable's step value SCEV expression.
-static uint32_t getVFFromIndVar(const SCEV *Step, const Function &F) {
- if (!Step)
- return 0U;
-
- // Looking for loops with IV step value in the form of `(<constant VF> x
- // vscale)`.
- if (const auto *Mul = dyn_cast<SCEVMulExpr>(Step)) {
- if (Mul->getNumOperands() == 2) {
- const SCEV *LHS = Mul->getOperand(0);
- const SCEV *RHS = Mul->getOperand(1);
- if (const auto *Const = dyn_cast<SCEVConstant>(LHS);
- Const && isa<SCEVVScale>(RHS)) {
- uint64_t V = Const->getAPInt().getLimitedValue();
- if (llvm::isUInt<32>(V))
- return V;
- }
- }
- }
-
- // If not, see if the vscale_range of the parent function is a fixed value,
- // which makes the step value to be replaced by a constant.
- if (F.hasFnAttribute(Attribute::VScaleRange))
- if (const auto *ConstStep = dyn_cast<SCEVConstant>(Step)) {
- APInt V = ConstStep->getAPInt().abs();
- ConstantRange CR = llvm::getVScaleRange(&F, 64);
- if (const APInt *Fixed = CR.getSingleElement()) {
- V = V.zextOrTrunc(Fixed->getBitWidth());
- uint64_t VF = V.udiv(*Fixed).getLimitedValue();
- if (VF && llvm::isUInt<32>(VF) &&
- // Make sure step is divisible by vscale.
- V.urem(*Fixed).isZero())
- return VF;
- }
- }
-
- return 0U;
-}
-
-bool EVLIndVarSimplifyImpl::run(Loop &L) {
- if (!EnableEVLIndVarSimplify)
- return false;
-
- if (!getBooleanLoopAttribute(&L, "llvm.loop.isvectorized"))
- return false;
- const MDOperand *EVLMD =
- findStringMetadataForLoop(&L, "llvm.loop.isvectorized.tailfoldingstyle")
- .value_or(nullptr);
- if (!EVLMD || !EVLMD->equalsStr("evl"))
- return false;
-
- BasicBlock *LatchBlock = L.getLoopLatch();
- ICmpInst *OrigLatchCmp = L.getLatchCmpInst();
- if (!LatchBlock || !OrigLatchCmp)
- return false;
-
- InductionDescriptor IVD;
- PHINode *IndVar = L.getInductionVariable(SE);
- if (!IndVar || !L.getInductionDescriptor(SE, IVD)) {
- const char *Reason = (IndVar ? "induction descriptor is not available"
- : "cannot recognize induction variable");
- LLVM_DEBUG(dbgs() << "Cannot retrieve IV from loop " << L.getName()
- << " because" << Reason << "\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedIndVar",
- L.getStartLoc(), L.getHeader())
- << "Cannot retrieve IV because " << ore::NV("Reason", Reason);
- });
- }
- return false;
- }
-
- BasicBlock *InitBlock, *BackEdgeBlock;
- if (!L.getIncomingAndBackEdge(InitBlock, BackEdgeBlock)) {
- LLVM_DEBUG(dbgs() << "Expect unique incoming and backedge in "
- << L.getName() << "\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedLoopStructure",
- L.getStartLoc(), L.getHeader())
- << "Does not have a unique incoming and backedge";
- });
- }
- return false;
- }
-
- // Retrieve the loop bounds.
- std::optional<Loop::LoopBounds> Bounds = L.getBounds(SE);
- if (!Bounds) {
- LLVM_DEBUG(dbgs() << "Could not obtain the bounds for loop " << L.getName()
- << "\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedLoopStructure",
- L.getStartLoc(), L.getHeader())
- << "Could not obtain the loop bounds";
- });
- }
- return false;
- }
- Value *CanonicalIVInit = &Bounds->getInitialIVValue();
- Value *CanonicalIVFinal = &Bounds->getFinalIVValue();
-
- const SCEV *StepV = IVD.getStep();
- uint32_t VF = getVFFromIndVar(StepV, *L.getHeader()->getParent());
- if (!VF) {
- LLVM_DEBUG(dbgs() << "Could not infer VF from IndVar step '" << *StepV
- << "'\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedIndVar",
- L.getStartLoc(), L.getHeader())
- << "Could not infer VF from IndVar step "
- << ore::NV("Step", StepV);
- });
- }
- return false;
- }
- LLVM_DEBUG(dbgs() << "Using VF=" << VF << " for loop " << L.getName()
- << "\n");
-
- // Try to find the EVL-based induction variable.
- using namespace PatternMatch;
- BasicBlock *BB = IndVar->getParent();
-
- Value *EVLIndVar = nullptr;
- Value *RemTC = nullptr;
- Value *TC = nullptr;
- auto IntrinsicMatch = m_Intrinsic<Intrinsic::experimental_get_vector_length>(
- m_Value(RemTC), m_SpecificInt(VF),
- /*Scalable=*/m_SpecificInt(1));
- for (PHINode &PN : BB->phis()) {
- if (&PN == IndVar)
- continue;
-
- // Check 1: it has to contain both incoming (init) & backedge blocks
- // from IndVar.
- if (PN.getBasicBlockIndex(InitBlock) < 0 ||
- PN.getBasicBlockIndex(BackEdgeBlock) < 0)
- continue;
- // Check 2: EVL index is always increasing, thus its inital value has to be
- // equal to either the initial IV value (when the canonical IV is also
- // increasing) or the last IV value (when canonical IV is decreasing).
- Value *Init = PN.getIncomingValueForBlock(InitBlock);
- using Direction = Loop::LoopBounds::Direction;
- switch (Bounds->getDirection()) {
- case Direction::Increasing:
- if (Init != CanonicalIVInit)
- continue;
- break;
- case Direction::Decreasing:
- if (Init != CanonicalIVFinal)
- continue;
- break;
- case Direction::Unknown:
- // To be more permissive and see if either the initial or final IV value
- // matches PN's init value.
- if (Init != CanonicalIVInit && Init != CanonicalIVFinal)
- continue;
- break;
- }
- Value *RecValue = PN.getIncomingValueForBlock(BackEdgeBlock);
- assert(RecValue && "expect recurrent IndVar value");
-
- LLVM_DEBUG(dbgs() << "Found candidate PN of EVL-based IndVar: " << PN
- << "\n");
-
- // Check 3: Pattern match to find the EVL-based index and total trip count
- // (TC).
- if (match(RecValue,
- m_c_Add(m_ZExtOrSelf(IntrinsicMatch), m_Specific(&PN))) &&
- match(RemTC, m_Sub(m_Value(TC), m_Specific(&PN)))) {
- EVLIndVar = RecValue;
- break;
- }
- }
-
- if (!EVLIndVar || !TC)
- return false;
-
- LLVM_DEBUG(dbgs() << "Using " << *EVLIndVar << " for EVL-based IndVar\n");
- if (ORE) {
- ORE->emit([&]() {
- DebugLoc DL;
- BasicBlock *Region = nullptr;
- if (auto *I = dyn_cast<Instruction>(EVLIndVar)) {
- DL = I->getDebugLoc();
- Region = I->getParent();
- } else {
- DL = L.getStartLoc();
- Region = L.getHeader();
- }
- return OptimizationRemark(DEBUG_TYPE, "UseEVLIndVar", DL, Region)
- << "Using " << ore::NV("EVLIndVar", EVLIndVar)
- << " for EVL-based IndVar";
- });
- }
-
- // Create an EVL-based comparison and replace the branch to use it as
- // predicate.
-
- // Loop::getLatchCmpInst check at the beginning of this function has ensured
- // that latch block ends in a conditional branch.
- auto *LatchBranch = cast<BranchInst>(LatchBlock->getTerminator());
- assert(LatchBranch->isConditional() &&
- "expect the loop latch to be ended with a conditional branch");
- ICmpInst::Predicate Pred;
- if (LatchBranch->getSuccessor(0) == L.getHeader())
- Pred = ICmpInst::ICMP_NE;
- else
- Pred = ICmpInst::ICMP_EQ;
-
- IRBuilder<> Builder(OrigLatchCmp);
- auto *NewLatchCmp = Builder.CreateICmp(Pred, EVLIndVar, TC);
- OrigLatchCmp->replaceAllUsesWith(NewLatchCmp);
-
- // llvm::RecursivelyDeleteDeadPHINode only deletes cycles whose values are
- // not used outside the cycles. However, in this case the now-RAUW-ed
- // OrigLatchCmp will be considered a use outside the cycle while in reality
- // it's practically dead. Thus we need to remove it before calling
- // RecursivelyDeleteDeadPHINode.
- (void)RecursivelyDeleteTriviallyDeadInstructions(OrigLatchCmp);
- if (llvm::RecursivelyDeleteDeadPHINode(IndVar))
- LLVM_DEBUG(dbgs() << "Removed original IndVar\n");
-
- ++NumEliminatedCanonicalIV;
-
- return true;
-}
-
-PreservedAnalyses EVLIndVarSimplifyPass::run(Loop &L, LoopAnalysisManager &LAM,
- LoopStandardAnalysisResults &AR,
- LPMUpdater &U) {
- Function &F = *L.getHeader()->getParent();
- auto &FAMProxy = LAM.getResult<FunctionAnalysisManagerLoopProxy>(L, AR);
- OptimizationRemarkEmitter *ORE =
- FAMProxy.getCachedResult<OptimizationRemarkEmitterAnalysis>(F);
-
- if (EVLIndVarSimplifyImpl(AR, ORE).run(L))
- return PreservedAnalyses::allInSet<CFGAnalyses>();
- return PreservedAnalyses::all();
-}
diff --git a/llvm/test/Transforms/LoopVectorize/RISCV/evl-iv-simplify.ll b/llvm/test/Transforms/LoopVectorize/RISCV/evl-iv-simplify.ll
deleted file mode 100644
index 4de0e666149f3..0000000000000
--- a/llvm/test/Transforms/LoopVectorize/RISCV/evl-iv-simplify.ll
+++ /dev/null
@@ -1,333 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
-; RUN: opt -S -mtriple=riscv64 -mattr='+v' --passes='loop(evl-iv-simplify)' < %s | FileCheck %s
-; RUN: opt -S -mtriple=riscv64 -mattr='+v' --passes='loop(evl-iv-simplify),function(simplifycfg,dce)' < %s | FileCheck %s --check-prefix=LOOP-DEL
-
-define void @simple(ptr noalias %a, ptr noalias %b, <vscale x 4 x i32> %c, i64 %N) vscale_range(2, 1024) {
-; CHECK-LABEL: define void @simple(
-; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], <vscale x 4 x i32> [[C:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = sub i64 -1, [[N]]
-; CHECK-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
-; CHECK-NEXT: [[TMP2:%.*]] = mul i64 [[TMP1]], 4
-; CHECK-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP0]], [[TMP2]]
-; CHECK-NEXT: br i1 [[TMP3]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
-; CHECK: vector.ph:
-; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
-; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
-; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
-; CHECK-NEXT: [[TMP7:%.*]] = mul i64 [[TMP6]], 4
-; CHECK-NEXT: [[TMP8:%.*]] = sub i64 [[TMP7]], 1
-; CHECK-NEXT: [[N_RND_UP:%.*]] = add i64 [[N]], [[TMP8]]
-; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], [[TMP5]]
-; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
-; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
-; CHECK: vector.body:
-; CHECK-NEXT: [[EVL_BASED_IV:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_EVL_NEXT:%.*]], [[VECTOR_BODY]] ]
-; CHECK-NEXT: [[TMP11:%.*]] = sub i64 [[N]], [[EVL_BASED_IV]]
-; CHECK-NEXT: [[TMP12:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[TMP11]], i32 4, i1 true)
-; CHECK-NEXT: [[TMP13:%.*]] = add i64 [[EVL_BASED_IV]], 0
-; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[TMP13]]
-; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds i32, ptr [[TMP14]], i32 0
-; CHECK-NEXT: [[VP_OP_LOAD1:%.*]] = call <vscale x 4 x i32> @llvm.vp.load.nxv4i32.p0(ptr align 4 [[TMP17]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP12]])
-; CHECK-NEXT: [[TMP18:%.*]] = add nsw <vscale x 4 x i32> [[C]], [[VP_OP_LOAD1]]
-; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP13]]
-; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds i32, ptr [[TMP19]], i32 0
-; CHECK-NEXT: call void @llvm.vp.store.nxv4i32.p0(<vscale x 4 x i32> [[TMP18]], ptr align 4 [[TMP20]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP12]])
-; CHECK-NEXT: [[TMP21:%.*]] = zext i32 [[TMP12]] to i64
-; CHECK-NEXT: [[INDEX_EVL_NEXT]] = add i64 [[TMP21]], [[EVL_BASED_IV]]
-; CHECK-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_EVL_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
-; CHECK: middle.block:
-; CHECK-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
-; CHECK: scalar.ph:
-; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
-; CHECK-NEXT: br label [[FOR_BODY:%.*]]
-; CHECK: for.body:
-; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
-; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
-; CHECK-NEXT: [[ADD:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
-; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
-; CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX4]], align 4
-; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
-; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
-; CHECK: for.cond.cleanup.loopexit:
-; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
-; CHECK: for.cond.cleanup:
-; CHECK-NEXT: ret void
-;
-; LOOP-DEL-LABEL: define void @simple(
-; LOOP-DEL-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], <vscale x 4 x i32> [[C:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
-; LOOP-DEL-NEXT: entry:
-; LOOP-DEL-NEXT: [[TMP0:%.*]] = sub i64 -1, [[N]]
-; LOOP-DEL-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
-; LOOP-DEL-NEXT: [[TMP2:%.*]] = mul i64 [[TMP1]], 4
-; LOOP-DEL-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP0]], [[TMP2]]
-; LOOP-DEL-NEXT: br i1 [[TMP3]], label [[FOR_BODY:%.*]], label [[VECTOR_PH:%.*]]
-; LOOP-DEL: vector.ph:
-; LOOP-DEL-NEXT: br label [[VECTOR_BODY:%.*]]
-; LOOP-DEL: vector.body:
-; LOOP-DEL-NEXT: [[EVL_BASED_IV:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_EVL_NEXT:%.*]], [[VECTOR_BODY]] ]
-; LOOP-DEL-NEXT: [[TMP4:%.*]] = sub i64 [[N]], [[EVL_BASED_IV]]
-; LOOP-DEL-NEXT: [[TMP5:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[TMP4]], i32 4, i1 true)
-; LOOP-DEL-NEXT: [[TMP6:%.*]] = add i64 [[EVL_BASED_IV]], 0
-; LOOP-DEL-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[TMP6]]
-; LOOP-DEL-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[TMP7]], i32 0
-; LOOP-DEL-NEXT: [[VP_OP_LOAD1:%.*]] = call <vscale x 4 x i32> @llvm.vp.load.nxv4i32.p0(ptr align 4 [[TMP10]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP5]])
-; LOOP-DEL-NEXT: [[TMP11:%.*]] = add nsw <vscale x 4 x i32> [[C]], [[VP_OP_LOAD1]]
-; LOOP-DEL-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP6]]
-; LOOP-DEL-NEXT: [[TMP13:%.*]] = getelementpt...
[truncated]
|
Member
|
@llvm/pr-subscribers-backend-risc-v Author: Luke Lau (lukel97) ChangesInitially this was needed to replace the fixed-step canonical IV with the variable-step EVL IV, but this was eventually superseded by the loop vectorizer doing this transform itself in #147222. The pass was then removed from the RISC-V pipeline in #151483 and the loop vectorizer stopped emitting the metadata used by the pass in #155760, so now there's no users of it. Patch is 33.57 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/160454.diff 6 Files Affected:
diff --git a/llvm/include/llvm/Transforms/Vectorize/EVLIndVarSimplify.h b/llvm/include/llvm/Transforms/Vectorize/EVLIndVarSimplify.h
deleted file mode 100644
index 3178dc762a195..0000000000000
--- a/llvm/include/llvm/Transforms/Vectorize/EVLIndVarSimplify.h
+++ /dev/null
@@ -1,31 +0,0 @@
-//===------ EVLIndVarSimplify.h - Optimize vectorized loops w/ EVL IV------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass optimizes a vectorized loop with canonical IV to using EVL-based
-// IV if it was tail-folded by predicated EVL.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_TRANSFORMS_VECTORIZE_EVLINDVARSIMPLIFY_H
-#define LLVM_TRANSFORMS_VECTORIZE_EVLINDVARSIMPLIFY_H
-
-#include "llvm/Analysis/LoopAnalysisManager.h"
-#include "llvm/IR/PassManager.h"
-
-namespace llvm {
-class Loop;
-class LPMUpdater;
-
-/// Turn vectorized loops with canonical induction variables into loops that
-/// only use a single EVL-based induction variable.
-struct EVLIndVarSimplifyPass : public PassInfoMixin<EVLIndVarSimplifyPass> {
- PreservedAnalyses run(Loop &L, LoopAnalysisManager &LAM,
- LoopStandardAnalysisResults &AR, LPMUpdater &U);
-};
-} // namespace llvm
-#endif
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index e4dab4acc0b4a..f84a16bd97224 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -375,7 +375,6 @@
#include "llvm/Transforms/Utils/SymbolRewriter.h"
#include "llvm/Transforms/Utils/UnifyFunctionExitNodes.h"
#include "llvm/Transforms/Utils/UnifyLoopExits.h"
-#include "llvm/Transforms/Vectorize/EVLIndVarSimplify.h"
#include "llvm/Transforms/Vectorize/LoadStoreVectorizer.h"
#include "llvm/Transforms/Vectorize/LoopIdiomVectorize.h"
#include "llvm/Transforms/Vectorize/LoopVectorize.h"
diff --git a/llvm/lib/Passes/PassRegistry.def b/llvm/lib/Passes/PassRegistry.def
index 49d5d08474f0f..f0e7d36f78aab 100644
--- a/llvm/lib/Passes/PassRegistry.def
+++ b/llvm/lib/Passes/PassRegistry.def
@@ -755,7 +755,6 @@ LOOP_ANALYSIS("should-run-extra-simple-loop-unswitch",
#endif
LOOP_PASS("canon-freeze", CanonicalizeFreezeInLoopsPass())
LOOP_PASS("dot-ddg", DDGDotPrinterPass())
-LOOP_PASS("evl-iv-simplify", EVLIndVarSimplifyPass())
LOOP_PASS("guard-widening", GuardWideningPass())
LOOP_PASS("extra-simple-loop-unswitch-passes",
ExtraLoopPassManager<ShouldRunExtraSimpleLoopUnswitch>())
diff --git a/llvm/lib/Transforms/Vectorize/CMakeLists.txt b/llvm/lib/Transforms/Vectorize/CMakeLists.txt
index 96670fe3ea195..9f4a242214471 100644
--- a/llvm/lib/Transforms/Vectorize/CMakeLists.txt
+++ b/llvm/lib/Transforms/Vectorize/CMakeLists.txt
@@ -1,5 +1,4 @@
add_llvm_component_library(LLVMVectorize
- EVLIndVarSimplify.cpp
LoadStoreVectorizer.cpp
LoopIdiomVectorize.cpp
LoopVectorizationLegality.cpp
diff --git a/llvm/lib/Transforms/Vectorize/EVLIndVarSimplify.cpp b/llvm/lib/Transforms/Vectorize/EVLIndVarSimplify.cpp
deleted file mode 100644
index 5dd689799b828..0000000000000
--- a/llvm/lib/Transforms/Vectorize/EVLIndVarSimplify.cpp
+++ /dev/null
@@ -1,300 +0,0 @@
-//===---- EVLIndVarSimplify.cpp - Optimize vectorized loops w/ EVL IV------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass optimizes a vectorized loop with canonical IV to using EVL-based
-// IV if it was tail-folded by predicated EVL.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Vectorize/EVLIndVarSimplify.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Analysis/IVDescriptors.h"
-#include "llvm/Analysis/LoopInfo.h"
-#include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/OptimizationRemarkEmitter.h"
-#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/Analysis/ScalarEvolutionExpressions.h"
-#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/PatternMatch.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
-#include "llvm/Transforms/Utils/Local.h"
-
-#define DEBUG_TYPE "evl-iv-simplify"
-
-using namespace llvm;
-
-STATISTIC(NumEliminatedCanonicalIV, "Number of canonical IVs we eliminated");
-
-static cl::opt<bool> EnableEVLIndVarSimplify(
- "enable-evl-indvar-simplify",
- cl::desc("Enable EVL-based induction variable simplify Pass"), cl::Hidden,
- cl::init(true));
-
-namespace {
-struct EVLIndVarSimplifyImpl {
- ScalarEvolution &SE;
- OptimizationRemarkEmitter *ORE = nullptr;
-
- EVLIndVarSimplifyImpl(LoopStandardAnalysisResults &LAR,
- OptimizationRemarkEmitter *ORE)
- : SE(LAR.SE), ORE(ORE) {}
-
- /// Returns true if modify the loop.
- bool run(Loop &L);
-};
-} // anonymous namespace
-
-/// Returns the constant part of vectorization factor from the induction
-/// variable's step value SCEV expression.
-static uint32_t getVFFromIndVar(const SCEV *Step, const Function &F) {
- if (!Step)
- return 0U;
-
- // Looking for loops with IV step value in the form of `(<constant VF> x
- // vscale)`.
- if (const auto *Mul = dyn_cast<SCEVMulExpr>(Step)) {
- if (Mul->getNumOperands() == 2) {
- const SCEV *LHS = Mul->getOperand(0);
- const SCEV *RHS = Mul->getOperand(1);
- if (const auto *Const = dyn_cast<SCEVConstant>(LHS);
- Const && isa<SCEVVScale>(RHS)) {
- uint64_t V = Const->getAPInt().getLimitedValue();
- if (llvm::isUInt<32>(V))
- return V;
- }
- }
- }
-
- // If not, see if the vscale_range of the parent function is a fixed value,
- // which makes the step value to be replaced by a constant.
- if (F.hasFnAttribute(Attribute::VScaleRange))
- if (const auto *ConstStep = dyn_cast<SCEVConstant>(Step)) {
- APInt V = ConstStep->getAPInt().abs();
- ConstantRange CR = llvm::getVScaleRange(&F, 64);
- if (const APInt *Fixed = CR.getSingleElement()) {
- V = V.zextOrTrunc(Fixed->getBitWidth());
- uint64_t VF = V.udiv(*Fixed).getLimitedValue();
- if (VF && llvm::isUInt<32>(VF) &&
- // Make sure step is divisible by vscale.
- V.urem(*Fixed).isZero())
- return VF;
- }
- }
-
- return 0U;
-}
-
-bool EVLIndVarSimplifyImpl::run(Loop &L) {
- if (!EnableEVLIndVarSimplify)
- return false;
-
- if (!getBooleanLoopAttribute(&L, "llvm.loop.isvectorized"))
- return false;
- const MDOperand *EVLMD =
- findStringMetadataForLoop(&L, "llvm.loop.isvectorized.tailfoldingstyle")
- .value_or(nullptr);
- if (!EVLMD || !EVLMD->equalsStr("evl"))
- return false;
-
- BasicBlock *LatchBlock = L.getLoopLatch();
- ICmpInst *OrigLatchCmp = L.getLatchCmpInst();
- if (!LatchBlock || !OrigLatchCmp)
- return false;
-
- InductionDescriptor IVD;
- PHINode *IndVar = L.getInductionVariable(SE);
- if (!IndVar || !L.getInductionDescriptor(SE, IVD)) {
- const char *Reason = (IndVar ? "induction descriptor is not available"
- : "cannot recognize induction variable");
- LLVM_DEBUG(dbgs() << "Cannot retrieve IV from loop " << L.getName()
- << " because" << Reason << "\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedIndVar",
- L.getStartLoc(), L.getHeader())
- << "Cannot retrieve IV because " << ore::NV("Reason", Reason);
- });
- }
- return false;
- }
-
- BasicBlock *InitBlock, *BackEdgeBlock;
- if (!L.getIncomingAndBackEdge(InitBlock, BackEdgeBlock)) {
- LLVM_DEBUG(dbgs() << "Expect unique incoming and backedge in "
- << L.getName() << "\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedLoopStructure",
- L.getStartLoc(), L.getHeader())
- << "Does not have a unique incoming and backedge";
- });
- }
- return false;
- }
-
- // Retrieve the loop bounds.
- std::optional<Loop::LoopBounds> Bounds = L.getBounds(SE);
- if (!Bounds) {
- LLVM_DEBUG(dbgs() << "Could not obtain the bounds for loop " << L.getName()
- << "\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedLoopStructure",
- L.getStartLoc(), L.getHeader())
- << "Could not obtain the loop bounds";
- });
- }
- return false;
- }
- Value *CanonicalIVInit = &Bounds->getInitialIVValue();
- Value *CanonicalIVFinal = &Bounds->getFinalIVValue();
-
- const SCEV *StepV = IVD.getStep();
- uint32_t VF = getVFFromIndVar(StepV, *L.getHeader()->getParent());
- if (!VF) {
- LLVM_DEBUG(dbgs() << "Could not infer VF from IndVar step '" << *StepV
- << "'\n");
- if (ORE) {
- ORE->emit([&]() {
- return OptimizationRemarkMissed(DEBUG_TYPE, "UnrecognizedIndVar",
- L.getStartLoc(), L.getHeader())
- << "Could not infer VF from IndVar step "
- << ore::NV("Step", StepV);
- });
- }
- return false;
- }
- LLVM_DEBUG(dbgs() << "Using VF=" << VF << " for loop " << L.getName()
- << "\n");
-
- // Try to find the EVL-based induction variable.
- using namespace PatternMatch;
- BasicBlock *BB = IndVar->getParent();
-
- Value *EVLIndVar = nullptr;
- Value *RemTC = nullptr;
- Value *TC = nullptr;
- auto IntrinsicMatch = m_Intrinsic<Intrinsic::experimental_get_vector_length>(
- m_Value(RemTC), m_SpecificInt(VF),
- /*Scalable=*/m_SpecificInt(1));
- for (PHINode &PN : BB->phis()) {
- if (&PN == IndVar)
- continue;
-
- // Check 1: it has to contain both incoming (init) & backedge blocks
- // from IndVar.
- if (PN.getBasicBlockIndex(InitBlock) < 0 ||
- PN.getBasicBlockIndex(BackEdgeBlock) < 0)
- continue;
- // Check 2: EVL index is always increasing, thus its inital value has to be
- // equal to either the initial IV value (when the canonical IV is also
- // increasing) or the last IV value (when canonical IV is decreasing).
- Value *Init = PN.getIncomingValueForBlock(InitBlock);
- using Direction = Loop::LoopBounds::Direction;
- switch (Bounds->getDirection()) {
- case Direction::Increasing:
- if (Init != CanonicalIVInit)
- continue;
- break;
- case Direction::Decreasing:
- if (Init != CanonicalIVFinal)
- continue;
- break;
- case Direction::Unknown:
- // To be more permissive and see if either the initial or final IV value
- // matches PN's init value.
- if (Init != CanonicalIVInit && Init != CanonicalIVFinal)
- continue;
- break;
- }
- Value *RecValue = PN.getIncomingValueForBlock(BackEdgeBlock);
- assert(RecValue && "expect recurrent IndVar value");
-
- LLVM_DEBUG(dbgs() << "Found candidate PN of EVL-based IndVar: " << PN
- << "\n");
-
- // Check 3: Pattern match to find the EVL-based index and total trip count
- // (TC).
- if (match(RecValue,
- m_c_Add(m_ZExtOrSelf(IntrinsicMatch), m_Specific(&PN))) &&
- match(RemTC, m_Sub(m_Value(TC), m_Specific(&PN)))) {
- EVLIndVar = RecValue;
- break;
- }
- }
-
- if (!EVLIndVar || !TC)
- return false;
-
- LLVM_DEBUG(dbgs() << "Using " << *EVLIndVar << " for EVL-based IndVar\n");
- if (ORE) {
- ORE->emit([&]() {
- DebugLoc DL;
- BasicBlock *Region = nullptr;
- if (auto *I = dyn_cast<Instruction>(EVLIndVar)) {
- DL = I->getDebugLoc();
- Region = I->getParent();
- } else {
- DL = L.getStartLoc();
- Region = L.getHeader();
- }
- return OptimizationRemark(DEBUG_TYPE, "UseEVLIndVar", DL, Region)
- << "Using " << ore::NV("EVLIndVar", EVLIndVar)
- << " for EVL-based IndVar";
- });
- }
-
- // Create an EVL-based comparison and replace the branch to use it as
- // predicate.
-
- // Loop::getLatchCmpInst check at the beginning of this function has ensured
- // that latch block ends in a conditional branch.
- auto *LatchBranch = cast<BranchInst>(LatchBlock->getTerminator());
- assert(LatchBranch->isConditional() &&
- "expect the loop latch to be ended with a conditional branch");
- ICmpInst::Predicate Pred;
- if (LatchBranch->getSuccessor(0) == L.getHeader())
- Pred = ICmpInst::ICMP_NE;
- else
- Pred = ICmpInst::ICMP_EQ;
-
- IRBuilder<> Builder(OrigLatchCmp);
- auto *NewLatchCmp = Builder.CreateICmp(Pred, EVLIndVar, TC);
- OrigLatchCmp->replaceAllUsesWith(NewLatchCmp);
-
- // llvm::RecursivelyDeleteDeadPHINode only deletes cycles whose values are
- // not used outside the cycles. However, in this case the now-RAUW-ed
- // OrigLatchCmp will be considered a use outside the cycle while in reality
- // it's practically dead. Thus we need to remove it before calling
- // RecursivelyDeleteDeadPHINode.
- (void)RecursivelyDeleteTriviallyDeadInstructions(OrigLatchCmp);
- if (llvm::RecursivelyDeleteDeadPHINode(IndVar))
- LLVM_DEBUG(dbgs() << "Removed original IndVar\n");
-
- ++NumEliminatedCanonicalIV;
-
- return true;
-}
-
-PreservedAnalyses EVLIndVarSimplifyPass::run(Loop &L, LoopAnalysisManager &LAM,
- LoopStandardAnalysisResults &AR,
- LPMUpdater &U) {
- Function &F = *L.getHeader()->getParent();
- auto &FAMProxy = LAM.getResult<FunctionAnalysisManagerLoopProxy>(L, AR);
- OptimizationRemarkEmitter *ORE =
- FAMProxy.getCachedResult<OptimizationRemarkEmitterAnalysis>(F);
-
- if (EVLIndVarSimplifyImpl(AR, ORE).run(L))
- return PreservedAnalyses::allInSet<CFGAnalyses>();
- return PreservedAnalyses::all();
-}
diff --git a/llvm/test/Transforms/LoopVectorize/RISCV/evl-iv-simplify.ll b/llvm/test/Transforms/LoopVectorize/RISCV/evl-iv-simplify.ll
deleted file mode 100644
index 4de0e666149f3..0000000000000
--- a/llvm/test/Transforms/LoopVectorize/RISCV/evl-iv-simplify.ll
+++ /dev/null
@@ -1,333 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
-; RUN: opt -S -mtriple=riscv64 -mattr='+v' --passes='loop(evl-iv-simplify)' < %s | FileCheck %s
-; RUN: opt -S -mtriple=riscv64 -mattr='+v' --passes='loop(evl-iv-simplify),function(simplifycfg,dce)' < %s | FileCheck %s --check-prefix=LOOP-DEL
-
-define void @simple(ptr noalias %a, ptr noalias %b, <vscale x 4 x i32> %c, i64 %N) vscale_range(2, 1024) {
-; CHECK-LABEL: define void @simple(
-; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], <vscale x 4 x i32> [[C:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = sub i64 -1, [[N]]
-; CHECK-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
-; CHECK-NEXT: [[TMP2:%.*]] = mul i64 [[TMP1]], 4
-; CHECK-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP0]], [[TMP2]]
-; CHECK-NEXT: br i1 [[TMP3]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
-; CHECK: vector.ph:
-; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
-; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
-; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
-; CHECK-NEXT: [[TMP7:%.*]] = mul i64 [[TMP6]], 4
-; CHECK-NEXT: [[TMP8:%.*]] = sub i64 [[TMP7]], 1
-; CHECK-NEXT: [[N_RND_UP:%.*]] = add i64 [[N]], [[TMP8]]
-; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], [[TMP5]]
-; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
-; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
-; CHECK: vector.body:
-; CHECK-NEXT: [[EVL_BASED_IV:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_EVL_NEXT:%.*]], [[VECTOR_BODY]] ]
-; CHECK-NEXT: [[TMP11:%.*]] = sub i64 [[N]], [[EVL_BASED_IV]]
-; CHECK-NEXT: [[TMP12:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[TMP11]], i32 4, i1 true)
-; CHECK-NEXT: [[TMP13:%.*]] = add i64 [[EVL_BASED_IV]], 0
-; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[TMP13]]
-; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds i32, ptr [[TMP14]], i32 0
-; CHECK-NEXT: [[VP_OP_LOAD1:%.*]] = call <vscale x 4 x i32> @llvm.vp.load.nxv4i32.p0(ptr align 4 [[TMP17]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP12]])
-; CHECK-NEXT: [[TMP18:%.*]] = add nsw <vscale x 4 x i32> [[C]], [[VP_OP_LOAD1]]
-; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP13]]
-; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds i32, ptr [[TMP19]], i32 0
-; CHECK-NEXT: call void @llvm.vp.store.nxv4i32.p0(<vscale x 4 x i32> [[TMP18]], ptr align 4 [[TMP20]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP12]])
-; CHECK-NEXT: [[TMP21:%.*]] = zext i32 [[TMP12]] to i64
-; CHECK-NEXT: [[INDEX_EVL_NEXT]] = add i64 [[TMP21]], [[EVL_BASED_IV]]
-; CHECK-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_EVL_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
-; CHECK: middle.block:
-; CHECK-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
-; CHECK: scalar.ph:
-; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
-; CHECK-NEXT: br label [[FOR_BODY:%.*]]
-; CHECK: for.body:
-; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
-; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
-; CHECK-NEXT: [[ADD:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
-; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
-; CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX4]], align 4
-; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
-; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
-; CHECK: for.cond.cleanup.loopexit:
-; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
-; CHECK: for.cond.cleanup:
-; CHECK-NEXT: ret void
-;
-; LOOP-DEL-LABEL: define void @simple(
-; LOOP-DEL-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], <vscale x 4 x i32> [[C:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
-; LOOP-DEL-NEXT: entry:
-; LOOP-DEL-NEXT: [[TMP0:%.*]] = sub i64 -1, [[N]]
-; LOOP-DEL-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
-; LOOP-DEL-NEXT: [[TMP2:%.*]] = mul i64 [[TMP1]], 4
-; LOOP-DEL-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP0]], [[TMP2]]
-; LOOP-DEL-NEXT: br i1 [[TMP3]], label [[FOR_BODY:%.*]], label [[VECTOR_PH:%.*]]
-; LOOP-DEL: vector.ph:
-; LOOP-DEL-NEXT: br label [[VECTOR_BODY:%.*]]
-; LOOP-DEL: vector.body:
-; LOOP-DEL-NEXT: [[EVL_BASED_IV:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_EVL_NEXT:%.*]], [[VECTOR_BODY]] ]
-; LOOP-DEL-NEXT: [[TMP4:%.*]] = sub i64 [[N]], [[EVL_BASED_IV]]
-; LOOP-DEL-NEXT: [[TMP5:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[TMP4]], i32 4, i1 true)
-; LOOP-DEL-NEXT: [[TMP6:%.*]] = add i64 [[EVL_BASED_IV]], 0
-; LOOP-DEL-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[TMP6]]
-; LOOP-DEL-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[TMP7]], i32 0
-; LOOP-DEL-NEXT: [[VP_OP_LOAD1:%.*]] = call <vscale x 4 x i32> @llvm.vp.load.nxv4i32.p0(ptr align 4 [[TMP10]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP5]])
-; LOOP-DEL-NEXT: [[TMP11:%.*]] = add nsw <vscale x 4 x i32> [[C]], [[VP_OP_LOAD1]]
-; LOOP-DEL-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP6]]
-; LOOP-DEL-NEXT: [[TMP13:%.*]] = getelementpt...
[truncated]
|
lukel97
changed the title
lukel97
changed the title
fhahn
approved these changes
Sep 24, 2025
fhahn
left a comment
fhahn
left a comment
Contributor
There was a problem hiding this comment.
LGTM, thanks, but good to wait a bit before landing to see if there are any concerns from potential users
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/186/builds/12673 Here is the relevant piece of the build log for the reference |
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/76/builds/12985 Here is the relevant piece of the build log for the reference |
mahesh-attarde
pushed a commit
to mahesh-attarde/llvm-project
that referenced
this pull request
Oct 3, 2025
Initially this was needed to replace the fixed-step canonical IV with the variable-step EVL IV, but this was eventually superseded by the loop vectorizer doing this transform itself in llvm#147222. The pass was then removed from the RISC-V pipeline in llvm#151483 and the loop vectorizer stopped emitting the metadata used by the pass in llvm#155760, so now there's no users of it.
trdthg
added a commit
to buddy-compiler/buddy-mlir
that referenced
this pull request
May 29, 2026
## Version and Build Flow
- fetch branch / apply local patch -> fetch exact submodule commit with
`git fetch origin "${LLVM_COMMIT}"`
- `LLVM_COMMIT + riscv-jitlink.patch hash` -> `LLVM_COMMIT` cache key
- apply `riscv-jitlink.patch` -> no patch; current LLVM already has the fix
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: `nanobind` /
`nanobind==2.4.*` -> `nanobind>=2.9,<3.0` / `nanobind==2.9.*`
## Python Bindings
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PybindAdaptors.h` -> `NanobindAdaptors.h`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PYBIND11_MODULE` -> `NB_MODULE`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: manual
pybind/nanobind CMake setup -> `mlir_configure_python_dev_packages()`
## MLIR API
- [#162167](llvm/llvm-project#162167) / ea291d0e8c93:
`vector::SplatOp` -> `vector::BroadcastOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::InsertElementOp` -> `vector::InsertOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::ExtractElementOp` -> `vector::ExtractOp`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`ValueRange{std::nullopt}` -> `ValueRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`TypeRange(std::nullopt)` -> `TypeRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c: empty
`scf.yield` with null operands -> empty `scf.yield`
- [#196082](llvm/llvm-project#196082) / dd57b0c9728a:
`computeConstantBound(..., /*closedUB=*/true)` ->
`computeConstantBound(..., ValueBoundsOptions{/*closedUB=*/true})`
- [#182715](llvm/llvm-project#182715) / 72f5050ae765:
`applyPatternsAndFoldGreedily(...)` -> `applyPatternsGreedily(...)`
## GPU and AMX
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`launchOp.getWorkgroupAttributions()` ->
`launchOp.getWorkgroupAttributionBBArgs()`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea: manual
`gpu.kernel` attr -> `outlinedFunc.setKernel(true)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`setAttr(getKnown*AttrName(), ...)` ->
`setKnownBlockSizeAttr(...)` / `setKnownGridSizeAttr(...)`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir/Dialect/AMX/AMXDialect.h` -> `mlir/Dialect/X86/X86Dialect.h`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir::amx::AMXDialect` -> `mlir::x86::X86Dialect`
## LLVM Source Lists
- [#167271](llvm/llvm-project#167271) / 2345b7d98f75:
`InlineSizeEstimatorAnalysis.cpp` -> removed upstream; no Buddy source-list
entry needed
- [#172680](llvm/llvm-project#172680) / 71760f324ff9:
`ExpandLargeDivRem.cpp` -> merged into `ExpandFp.cpp`
- [#172681](llvm/llvm-project#172681) / 5c05824d2bd3:
`ExpandFp.cpp` / merged `ExpandLargeDivRem.cpp` -> `ExpandIRInsts.cpp`
- [#77370](llvm/llvm-project#77370) / 5e0a06b34d09:
`ExpandMemCmp.cpp` in CodeGen -> moved to `Transforms/Scalar`
- [#181547](llvm/llvm-project#181547) / 9a0d65cdfd0d:
`CallBrPrepare.cpp` -> `InlineAsmPrepare.cpp`
- [#160454](llvm/llvm-project#160454) / aa6a33ae6556:
`EVLIndVarSimplify.cpp` -> removed upstream; no Buddy source-list entry needed
- [#192635](llvm/llvm-project#192635) / 680a9908194e:
`VPlanSLP.cpp` -> removed upstream; no Buddy source-list entry needed
## RISC-V Backend
- local Buddy `M0`-`M7` definitions -> upstream RISC-V `M0`-`M7` definitions
- Buddy `MatrixReg` using local mask regs -> `MatrixReg` using upstream mask regs
- IME `*N` instructions in disassembler tables -> mark affected instructions
`isCodeGenOnly = 1`
## Tool API and Link Libraries
- [#156715](llvm/llvm-project#156715) / dfbd76bda01e:
`Expected<std::unique_ptr<ToolOutputFile>>` from
`setupLLVMOptimizationRemarks` -> `Expected<LLVMRemarkFileHandle>`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, F)` ->
`codegen::setFunctionAttributes(F, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, *M)` ->
`codegen::setFunctionAttributes(*M, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#87226](llvm/llvm-project#87226) / d0e72ccc54df:
`TargetMachine::buildCodeGenPipeline(MPM, OS, DwoOut, FileType, Opt, PIC)` ->
pass `MAM` and `MMI.getContext()`
- [#170846](llvm/llvm-project#170846) / cd806d7e7689: `buddy-llc`
without `Plugins` -> link LLVM `Plugins`
- [#150805](llvm/llvm-project#150805) / ace42cf063a5,
[#151150](llvm/llvm-project#151150) / e68a20e0b762: implicit MLIR
register-all symbols -> link `MLIRRegisterAllDialects`,
`MLIRRegisterAllExtensions`, `MLIRRegisterAllPasses`
trdthg
added a commit
to buddy-compiler/buddy-mlir
that referenced
this pull request
May 29, 2026
- fetch branch / apply local patch -> fetch exact submodule commit with
`git fetch origin "${LLVM_COMMIT}"`
- `LLVM_COMMIT + riscv-jitlink.patch hash` -> `LLVM_COMMIT` cache key
- apply `riscv-jitlink.patch` -> no patch; current LLVM already has the fix
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: `nanobind` /
`nanobind==2.4.*` -> `nanobind>=2.9,<3.0` / `nanobind==2.9.*`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PybindAdaptors.h` -> `NanobindAdaptors.h`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PYBIND11_MODULE` -> `NB_MODULE`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: manual
pybind/nanobind CMake setup -> `mlir_configure_python_dev_packages()`
- [#162167](llvm/llvm-project#162167) / ea291d0e8c93:
`vector::SplatOp` -> `vector::BroadcastOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::InsertElementOp` -> `vector::InsertOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::ExtractElementOp` -> `vector::ExtractOp`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`ValueRange{std::nullopt}` -> `ValueRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`TypeRange(std::nullopt)` -> `TypeRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c: empty
`scf.yield` with null operands -> empty `scf.yield`
- [#196082](llvm/llvm-project#196082) / dd57b0c9728a:
`computeConstantBound(..., /*closedUB=*/true)` ->
`computeConstantBound(..., ValueBoundsOptions{/*closedUB=*/true})`
- [#182715](llvm/llvm-project#182715) / 72f5050ae765:
`applyPatternsAndFoldGreedily(...)` -> `applyPatternsGreedily(...)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`launchOp.getWorkgroupAttributions()` ->
`launchOp.getWorkgroupAttributionBBArgs()`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea: manual
`gpu.kernel` attr -> `outlinedFunc.setKernel(true)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`setAttr(getKnown*AttrName(), ...)` ->
`setKnownBlockSizeAttr(...)` / `setKnownGridSizeAttr(...)`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir/Dialect/AMX/AMXDialect.h` -> `mlir/Dialect/X86/X86Dialect.h`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir::amx::AMXDialect` -> `mlir::x86::X86Dialect`
- [#167271](llvm/llvm-project#167271) / 2345b7d98f75:
`InlineSizeEstimatorAnalysis.cpp` -> removed upstream; no Buddy source-list
entry needed
- [#172680](llvm/llvm-project#172680) / 71760f324ff9:
`ExpandLargeDivRem.cpp` -> merged into `ExpandFp.cpp`
- [#172681](llvm/llvm-project#172681) / 5c05824d2bd3:
`ExpandFp.cpp` / merged `ExpandLargeDivRem.cpp` -> `ExpandIRInsts.cpp`
- [#77370](llvm/llvm-project#77370) / 5e0a06b34d09:
`ExpandMemCmp.cpp` in CodeGen -> moved to `Transforms/Scalar`
- [#181547](llvm/llvm-project#181547) / 9a0d65cdfd0d:
`CallBrPrepare.cpp` -> `InlineAsmPrepare.cpp`
- [#160454](llvm/llvm-project#160454) / aa6a33ae6556:
`EVLIndVarSimplify.cpp` -> removed upstream; no Buddy source-list entry needed
- [#192635](llvm/llvm-project#192635) / 680a9908194e:
`VPlanSLP.cpp` -> removed upstream; no Buddy source-list entry needed
- local Buddy `M0`-`M7` definitions -> upstream RISC-V `M0`-`M7` definitions
- Buddy `MatrixReg` using local mask regs -> `MatrixReg` using upstream mask regs
- IME `*N` instructions in disassembler tables -> mark affected instructions
`isCodeGenOnly = 1`
- [#156715](llvm/llvm-project#156715) / dfbd76bda01e:
`Expected<std::unique_ptr<ToolOutputFile>>` from
`setupLLVMOptimizationRemarks` -> `Expected<LLVMRemarkFileHandle>`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, F)` ->
`codegen::setFunctionAttributes(F, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, *M)` ->
`codegen::setFunctionAttributes(*M, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#87226](llvm/llvm-project#87226) / d0e72ccc54df:
`TargetMachine::buildCodeGenPipeline(MPM, OS, DwoOut, FileType, Opt, PIC)` ->
pass `MAM` and `MMI.getContext()`
- [#170846](llvm/llvm-project#170846) / cd806d7e7689: `buddy-llc`
without `Plugins` -> link LLVM `Plugins`
- [#150805](llvm/llvm-project#150805) / ace42cf063a5,
[#151150](llvm/llvm-project#151150) / e68a20e0b762: implicit MLIR
register-all symbols -> link `MLIRRegisterAllDialects`,
`MLIRRegisterAllExtensions`, `MLIRRegisterAllPasses`
trdthg
added a commit
to buddy-compiler/buddy-mlir
that referenced
this pull request
May 29, 2026
- fetch branch / apply local patch -> fetch exact submodule commit with
`git fetch origin "${LLVM_COMMIT}"`
- `LLVM_COMMIT + riscv-jitlink.patch hash` -> `LLVM_COMMIT` cache key
- apply `riscv-jitlink.patch` -> no patch; current LLVM already has the fix
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: `nanobind` /
`nanobind==2.4.*` -> `nanobind>=2.9,<3.0` / `nanobind==2.9.*`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PybindAdaptors.h` -> `NanobindAdaptors.h`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PYBIND11_MODULE` -> `NB_MODULE`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: manual
pybind/nanobind CMake setup -> `mlir_configure_python_dev_packages()`
- [#162167](llvm/llvm-project#162167) / ea291d0e8c93:
`vector::SplatOp` -> `vector::BroadcastOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::InsertElementOp` -> `vector::InsertOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::ExtractElementOp` -> `vector::ExtractOp`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`ValueRange{std::nullopt}` -> `ValueRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`TypeRange(std::nullopt)` -> `TypeRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c: empty
`scf.yield` with null operands -> empty `scf.yield`
- [#196082](llvm/llvm-project#196082) / dd57b0c9728a:
`computeConstantBound(..., /*closedUB=*/true)` ->
`computeConstantBound(..., ValueBoundsOptions{/*closedUB=*/true})`
- [#182715](llvm/llvm-project#182715) / 72f5050ae765:
`applyPatternsAndFoldGreedily(...)` -> `applyPatternsGreedily(...)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`launchOp.getWorkgroupAttributions()` ->
`launchOp.getWorkgroupAttributionBBArgs()`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea: manual
`gpu.kernel` attr -> `outlinedFunc.setKernel(true)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`setAttr(getKnown*AttrName(), ...)` ->
`setKnownBlockSizeAttr(...)` / `setKnownGridSizeAttr(...)`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir/Dialect/AMX/AMXDialect.h` -> `mlir/Dialect/X86/X86Dialect.h`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir::amx::AMXDialect` -> `mlir::x86::X86Dialect`
- [#167271](llvm/llvm-project#167271) / 2345b7d98f75:
`InlineSizeEstimatorAnalysis.cpp` -> removed upstream; no Buddy source-list
entry needed
- [#172680](llvm/llvm-project#172680) / 71760f324ff9:
`ExpandLargeDivRem.cpp` -> merged into `ExpandFp.cpp`
- [#172681](llvm/llvm-project#172681) / 5c05824d2bd3:
`ExpandFp.cpp` / merged `ExpandLargeDivRem.cpp` -> `ExpandIRInsts.cpp`
- [#77370](llvm/llvm-project#77370) / 5e0a06b34d09:
`ExpandMemCmp.cpp` in CodeGen -> moved to `Transforms/Scalar`
- [#181547](llvm/llvm-project#181547) / 9a0d65cdfd0d:
`CallBrPrepare.cpp` -> `InlineAsmPrepare.cpp`
- [#160454](llvm/llvm-project#160454) / aa6a33ae6556:
`EVLIndVarSimplify.cpp` -> removed upstream; no Buddy source-list entry needed
- [#192635](llvm/llvm-project#192635) / 680a9908194e:
`VPlanSLP.cpp` -> removed upstream; no Buddy source-list entry needed
- local Buddy `M0`-`M7` definitions -> upstream RISC-V `M0`-`M7` definitions
- Buddy `MatrixReg` using local mask regs -> `MatrixReg` using upstream mask regs
- IME `*N` instructions in disassembler tables -> mark affected instructions
`isCodeGenOnly = 1`
- [#156715](llvm/llvm-project#156715) / dfbd76bda01e:
`Expected<std::unique_ptr<ToolOutputFile>>` from
`setupLLVMOptimizationRemarks` -> `Expected<LLVMRemarkFileHandle>`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, F)` ->
`codegen::setFunctionAttributes(F, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, *M)` ->
`codegen::setFunctionAttributes(*M, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#87226](llvm/llvm-project#87226) / d0e72ccc54df:
`TargetMachine::buildCodeGenPipeline(MPM, OS, DwoOut, FileType, Opt, PIC)` ->
pass `MAM` and `MMI.getContext()`
- [#170846](llvm/llvm-project#170846) / cd806d7e7689: `buddy-llc`
without `Plugins` -> link LLVM `Plugins`
- [#150805](llvm/llvm-project#150805) / ace42cf063a5,
[#151150](llvm/llvm-project#151150) / e68a20e0b762: implicit MLIR
register-all symbols -> link `MLIRRegisterAllDialects`,
`MLIRRegisterAllExtensions`, `MLIRRegisterAllPasses`
trdthg
added a commit
to buddy-compiler/buddy-mlir
that referenced
this pull request
Jun 1, 2026
- fetch branch / apply local patch -> fetch exact submodule commit with
`git fetch origin "${LLVM_COMMIT}"`
- `LLVM_COMMIT + riscv-jitlink.patch hash` -> `LLVM_COMMIT` cache key
- apply `riscv-jitlink.patch` -> no patch; current LLVM already has the fix
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: `nanobind` /
`nanobind==2.4.*` -> `nanobind>=2.9,<3.0` / `nanobind==2.9.*`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PybindAdaptors.h` -> `NanobindAdaptors.h`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97:
`PYBIND11_MODULE` -> `NB_MODULE`
- [#172581](llvm/llvm-project#172581) / 3d7018c70b97: manual
pybind/nanobind CMake setup -> `mlir_configure_python_dev_packages()`
- [#162167](llvm/llvm-project#162167) / ea291d0e8c93:
`vector::SplatOp` -> `vector::BroadcastOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::InsertElementOp` -> `vector::InsertOp`
- [#149603](llvm/llvm-project#149603) / 33465bb2bb75:
`vector::ExtractElementOp` -> `vector::ExtractOp`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`ValueRange{std::nullopt}` -> `ValueRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c:
`TypeRange(std::nullopt)` -> `TypeRange{}`
- [#145445](llvm/llvm-project#145445) / 63f30d7d820c: empty
`scf.yield` with null operands -> empty `scf.yield`
- [#196082](llvm/llvm-project#196082) / dd57b0c9728a:
`computeConstantBound(..., /*closedUB=*/true)` ->
`computeConstantBound(..., ValueBoundsOptions{/*closedUB=*/true})`
- [#182715](llvm/llvm-project#182715) / 72f5050ae765:
`applyPatternsAndFoldGreedily(...)` -> `applyPatternsGreedily(...)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`launchOp.getWorkgroupAttributions()` ->
`launchOp.getWorkgroupAttributionBBArgs()`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea: manual
`gpu.kernel` attr -> `outlinedFunc.setKernel(true)`
- [#188905](llvm/llvm-project#188905) / c1cff89bdcea:
`setAttr(getKnown*AttrName(), ...)` ->
`setKnownBlockSizeAttr(...)` / `setKnownGridSizeAttr(...)`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir/Dialect/AMX/AMXDialect.h` -> `mlir/Dialect/X86/X86Dialect.h`
- [#111197](llvm/llvm-project#111197) / 2f743ac52e94:
`mlir::amx::AMXDialect` -> `mlir::x86::X86Dialect`
- [#167271](llvm/llvm-project#167271) / 2345b7d98f75:
`InlineSizeEstimatorAnalysis.cpp` -> removed upstream; no Buddy source-list
entry needed
- [#172680](llvm/llvm-project#172680) / 71760f324ff9:
`ExpandLargeDivRem.cpp` -> merged into `ExpandFp.cpp`
- [#172681](llvm/llvm-project#172681) / 5c05824d2bd3:
`ExpandFp.cpp` / merged `ExpandLargeDivRem.cpp` -> `ExpandIRInsts.cpp`
- [#77370](llvm/llvm-project#77370) / 5e0a06b34d09:
`ExpandMemCmp.cpp` in CodeGen -> moved to `Transforms/Scalar`
- [#181547](llvm/llvm-project#181547) / 9a0d65cdfd0d:
`CallBrPrepare.cpp` -> `InlineAsmPrepare.cpp`
- [#160454](llvm/llvm-project#160454) / aa6a33ae6556:
`EVLIndVarSimplify.cpp` -> removed upstream; no Buddy source-list entry needed
- [#192635](llvm/llvm-project#192635) / 680a9908194e:
`VPlanSLP.cpp` -> removed upstream; no Buddy source-list entry needed
- local Buddy `M0`-`M7` definitions -> upstream RISC-V `M0`-`M7` definitions
- Buddy `MatrixReg` using local mask regs -> `MatrixReg` using upstream mask regs
- IME `*N` instructions in disassembler tables -> mark affected instructions
`isCodeGenOnly = 1`
- [#156715](llvm/llvm-project#156715) / dfbd76bda01e:
`Expected<std::unique_ptr<ToolOutputFile>>` from
`setupLLVMOptimizationRemarks` -> `Expected<LLVMRemarkFileHandle>`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, F)` ->
`codegen::setFunctionAttributes(F, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#186998](llvm/llvm-project#186998) / 69cd746bd2f1:
`codegen::setFunctionAttributes(CPUStr, FeaturesStr, *M)` ->
`codegen::setFunctionAttributes(*M, CPUStr, FeaturesStr[, TuneCPUStr])`
- [#87226](llvm/llvm-project#87226) / d0e72ccc54df:
`TargetMachine::buildCodeGenPipeline(MPM, OS, DwoOut, FileType, Opt, PIC)` ->
pass `MAM` and `MMI.getContext()`
- [#170846](llvm/llvm-project#170846) / cd806d7e7689: `buddy-llc`
without `Plugins` -> link LLVM `Plugins`
- [#150805](llvm/llvm-project#150805) / ace42cf063a5,
[#151150](llvm/llvm-project#151150) / e68a20e0b762: implicit MLIR
register-all symbols -> link `MLIRRegisterAllDialects`,
`MLIRRegisterAllExtensions`, `MLIRRegisterAllPasses`
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
6 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Initially this was needed to replace the fixed-step canonical IV with the variable-step EVL IV, but this was eventually superseded by the loop vectorizer doing this transform itself in #147222. The pass was then removed from the RISC-V pipeline in #151483 and the loop vectorizer stopped emitting the metadata used by the pass in #155760, so now there's no users of it.